Paper-thin solar charger fits inside a notebook

July 21, 2015 // By Rich Pell
A paper thin and ultra-lightweight solar charger from solar design startup Yolk (Seoul) has already raised over $500,000 of its $50,000 goal in its crowdfunding campaign.

Designed to be as thin and aesthetically pleasing as possible, the charger, called Solar Paper, is claimed to be "the world's thinnest and lightest solar charger." It is thin enough that it can be be placed inside a notebook or planner, yet the basic 5-W version is powerful enough to charge a smartphone in 2.5 hours on a sunny day according to the company.

Modular in design, Solar Paper can be expanded to handle larger devices by adding new magnetic panels in place. As part of their campaign, the company is offering 5-, 7.5- and 10-W chargers, with two, three or four panels, respectively.

The charger works with almost any device that charges via USB and measures 9 x 19 x 1.1 cm when folded, and weighs 120 g (4 oz). It also includes an LCD current meter that displays the amount of current between the charger and device at any time. The first shipments are expected to start in September.

Solar Paper Kickstarter page